chat_listview 0.0.1

chat_listview: ^0.0.1 copied to clipboard

1，第一次加载数据存入bottomList

    bottomList.addAll(_buildNewMessage());

2，新收到消息

    bottomList.add('新消息');

3，历史消息

    topList.insert(0, '历史消息');

4，滚动到底部

    controller.scrollToBottom();

5，滚动到顶部

  controller.scrollToTop();

6，滚动到指定index，配合"scroll_to_index"库一起使用

  void autoJumpToIndex(position) {
    controller.scrollToIndex(
      position,
      duration: const Duration(milliseconds: 1),
      preferPosition: AutoScrollPosition.begin,
    );
  }

7，滚动到顶部加载更多

  Future<bool> onScrollToTopLoad() async {
    await Future.delayed(const Duration(seconds: 2));
    topList.insertAll(0, _buildHistoryMessage());
    return topList.length <= 88;
  }

8，滚动到底部加载更多

  Future<bool> onScrollToBottomLoad() async {
    await Future.delayed(const Duration(seconds: 2));
    bottomList.addAll(_buildNewMessage());
    return bottomList.length <= 88;
  }